package com.example.demo.config;

import com.example.demo.commom.AppVariable;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User:龙宝
 * Date:2023-04-02
 * Time:8:02
 */
/*
登陆拦截器
 */
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession(false);
        if(session != null &&session.getAttribute(AppVariable.USER_SESSION_KEY)!=null) {
            //用户已登录
            return true;
        }
        //调整到登录页面
        response.sendRedirect("/login.html");
        return false;
    }
}
